Multi-part moxibustion auxiliary nursing device and method thereof

Abstract

The invention relates to a multi-part moxibustion auxiliary nursing device and a method thereof, and belongs to the technical field of modern rehabilitation and daily health care, and the method comprises the following steps: S1, arranging a sound wave agglomeration flow channel and a downstream variable cross-section cyclone separation guide pipe; s2, the driving frequency is corrected along with temperature adjustment, the pipe diameter is made to be integral multiples of the half-wavelength, and it is ensured that standing wave nodes are located in the center of the section; s3, moxa-moxibustion smoke is introduced, and the flow speed is controlled to be 2-4 m / s so that the laminar flow state can be kept; s4, starting 27 to 29 kHz, gt; 140dB ultrasonic standing waves are adopted, and tar is driven by acoustic radiation force until wave nodes are gathered into gt; 10 [mu] m large particles; s5, the airflow tangentially enters an inverted-cone-shaped pipe, large particles are captured through centrifugal force, and medicine volatile oil gas is discharged from the center. According to the method, harmful substances such as polycyclic aromatic hydrocarbon and the like are efficiently removed, meanwhile, monoterpenoids and sesquiterpenoids volatile oil components in the moxa smoke are reserved to the maximum extent, and the medicinal value of moxibustion nursing is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of modern rehabilitation and daily health care, in particular to a multi-site moxibustion auxiliary nursing device and method thereof. BACKGROUND

[0002] With the wide application of moxibustion nursing in the field of modern rehabilitation and daily health care, the demand for moxibustion auxiliary nursing for multiple sites at the same time is increasing. In the traditional multi-point moxibustion application scenario, the smoke composition generated by moxibustion is extremely complex, and its treatment and purification has become a key factor restricting the popularization of this technology.

[0003] Currently, the traditional multi-point moxibustion smoke treatment usually relies on mechanical filtration or simple negative pressure suction technology. However, this treatment method has significant technical limitations in actual application: due to the high viscosity of the tar components and a large number of fine dust particles in the moxibustion smoke, the traditional physical filter screen is prone to serious clogging, resulting in a sharp decrease in purification efficiency as the use time increases, and the maintenance cost is extremely high. In addition, the existing purification means often cannot remove harmful smoke particles while retaining the medicinal components with nursing value, and often there is no medicine in the heat, that is, the medicinal volatile oil molecules gas generated by moxibustion is intercepted when filtering the smoke, which seriously affects the expected effect of moxibustion nursing. This extensive mode for moxibustion smoke treatment makes it difficult to reconcile the stability of the system, the purification accuracy and the retention of medicinal effect, which increases the risk of equipment failure and restricts the construction and development of multi-site moxibustion nursing projects.

[0004] The above information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore it can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0005] The purpose of the present application is to provide a multi-site moxibustion auxiliary nursing device and method thereof to solve the problems raised in the above background, specifically, the technical solutions of the present application are as follows:

[0006] A multi-site moxibustion auxiliary nursing method, comprising:

[0007] S1, setting a multi-path combustion source suction port, a sound wave agglomeration flow channel and a variable cross-section cyclone separation guide pipe, wherein the main body of the sound wave agglomeration flow channel is a metal circular tube with smooth inner wall, a piezoelectric ceramic transducer array is arranged on the outer wall of the metal circular tube in the axial direction, the variable cross-section cyclone separation guide pipe is located downstream of the sound wave agglomeration flow channel, the inlet end of the variable cross-section cyclone separation guide pipe is a volute type tangential inlet conversion section, and the main body of the variable cross-section cyclone separation guide pipe is a reverse tapered pipe;

[0008] S2. Obtain the current ambient temperature, correct the sound wave wavelength value according to the relationship between sound speed and temperature, and adjust the driving frequency of the piezoelectric ceramic transducer array so that the inner diameter of the metal tube is an integer multiple of half the sound wave wavelength, and the node plane of the standing wave is located at the geometric center of the cross section of the metal tube.

[0009] S3. Start the multi-way combustion source inlet, and draw the moxibustion smoke into the sound wave aggregation channel. Control the airflow velocity in the sound wave aggregation channel to 2-4 m / s and keep the airflow in a laminar state.

[0010] S4. Start the piezoelectric ceramic transducer array to establish an ultrasonic standing wave field in the acoustic agglomeration channel. The driving frequency is 27-29kHz and the sound intensity level is greater than 140dB. The acoustic radiation force is used to drive the tar particles in the flue gas to the nodal plane to aggregate into large particle agglomerates with a diameter greater than 10μm.

[0011] S5. The agglomerated airflow is introduced into the inverted conical tapered pipe through the volute-type tangential air intake conversion section. The centrifugal force generated by tangential acceleration throws the large particle agglomerates against the pipe wall for capture, and the drug volatile oil molecules are discharged from the center of the inverted conical tapered pipe.

[0012] Preferably, step S1 includes the following steps prior to:

[0013] S1.1 By constructing a physical model, with the matching degree between the inner diameter of the metal tube and the wavelength of the sound wave and the stability of the standing wave nodes as optimization objectives, the layout parameters of the piezoelectric ceramic transducer array and the geometric dimensions of the metal tube are simulated and calculated.

[0014] Preferably, in step S1, the piezoelectric ceramic transducer array includes multiple sets of piezoelectric ceramic transducers, each set of piezoelectric ceramic transducers includes two oscillators symmetrically distributed at 180 degrees along the radial cross section of the metal tube, and the oscillators are configured to vibrate in phase.

[0015] Preferably, step S5 includes:

[0016] The volute-type tangential intake conversion section is used to convert the straight airflow output from the acoustic wave agglomeration channel into a rotating airflow.

[0017] The airflow rotates and accelerates inside the inverted conical tapered pipe, causing the centrifugal force on large particle clusters to exceed the viscous drag force exerted on them by the fluid, thus causing them to break away from the airflow streamline and impact the pipe wall.

[0018] The centrifugal force on the volatile oil molecules of the drug is less than the viscous drag force exerted on them by the fluid, thus allowing them to be discharged from the center along with the main airflow.

[0019] Preferably, in step S1, the inlet tangential angle of the volute-type tangential intake conversion section is 15-30 degrees.

[0020] Preferably, in step S5, the drug volatile oil molecules are discharged through the inner pipe located at the end of the inverted conical tapered pipe, and the large particle clusters fall into the oil collection tank through the annular gap of the outer pipe located at the end of the inverted conical tapered pipe.

[0021] A multi-site moxibustion auxiliary care device, comprising:

[0022] Multiple combustion source inlets are used to collect the smoke generated during moxibustion;

[0023] The acoustic wave agglomeration channel is sealed and connected downstream of the multi-source combustion source inlet. The acoustic wave agglomeration channel includes a metal circular tube that serves as an acoustic wave guide and a piezoelectric ceramic transducer array disposed on the outer wall of the metal circular tube. The piezoelectric ceramic transducer array is used to establish an ultrasonic standing wave field inside the tube.

[0024] The variable cross-section swirl separation duct is sealed and connected downstream of the acoustic agglomeration channel. The variable cross-section swirl separation duct includes a volute-type tangential air intake conversion section for generating rotating airflow and an inverted conical tapered conical pipe for gas-solid separation.

[0025] Preferably, the tail end of the inverted conical tapered pipe is connected to a coaxial double-layer sleeve outlet, which includes a central inner pipe for discharging clean gas and an outer annular gap for capturing sludge and oil.

[0026] Preferably, the acoustic agglomeration channel and the variable cross-section cyclone separation conduit are connected by a flange seal, and the inner wall of the metal circular tube has a smooth surface.

[0027] Compared with the prior art, the present invention has the following improvements and advantages:

[0028] 1. This solution solves the technical problem of existing physical interception filtration methods being unable to distinguish between harmful tar and drug volatile oil molecules by establishing a series physical environment of ultrasonic standing wave field and swirling centrifugal field. Within the acoustic agglomeration channel, an ultrasonic standing wave field excited by a piezoelectric ceramic transducer array generates an acoustic radiation force pointing towards the nodal plane. This acoustic radiation force exhibits significant volume selectivity, driving large tar particles and ash to migrate towards the nodal plane and aggregate into large particle clusters with a diameter greater than 10 micrometers, while having almost no effect on the migration of small drug volatile oil molecules. During the acoustic agglomeration stage, drug molecules exhibit acoustic transparency due to their acoustic relaxation time being much longer than the acoustic wave period; while during the swirling separation stage, due to their extremely small mass, their movement... The flow is dominated by molecular thermal motion and fluid viscosity. The subsequent variable cross-section swirling separation conduit uses a volute-type tangential air inlet conversion section to create a strong swirling flow field. In this flow field, the large agglomerated particles, due to their significantly increased mass, experience a centrifugal force that is much greater than the viscous drag force applied by the fluid, thus detaching from the airflow streamline and impacting the pipe wall for capture. Conversely, the volatile oil molecules of the medicine, due to their extremely small mass, experience a viscous drag force that dominates their trajectory, locking them in the central streamline and discharging them from the center of the inverted conical tapered pipe. This physical sorting mechanism based on Stokes number differences achieves efficient removal of harmful substances such as tar particles with adsorbed polycyclic aromatic hydrocarbons while maximally preserving the monoterpenoid and sesquiterpenoid volatile oil components in the moxa smoke, ensuring the medicinal value of moxibustion care.

[0029] 2. This device uses a smooth-walled metal cylindrical tube as the main body of the acoustic agglomeration channel, combined with an inverted conical tapered pipe for centrifugal separation. The entire process is a non-contact field-induced separation, eliminating the physical basis for the blockage of micropores in the solid filter material by high-viscosity tar. This improvement eliminates the drawbacks of continuously increasing flow resistance and drastically decreasing suction power over time, ensuring the negative pressure stability of the multi-combustion source inlet. Users do not need to frequently replace expensive filter cartridges, significantly reducing the long-term operating costs and maintenance frequency of the equipment, and solving the industry pain points of short lifespan and high noise caused by oil blockage in moxibustion smoke extraction equipment.

[0030] 3. This solution introduces an acoustic wavelength correction mechanism based on ambient temperature. By acquiring temperature data in real time and adjusting the driving frequency of the piezoelectric ceramic transducer array, the system can always maintain the resonance condition that the inner diameter of the metal tube is an integer multiple of half the wavelength of the acoustic wave. This control strategy forces the node plane of the standing wave to be precisely locked at the geometric center of the cross-section of the metal tube, ensuring that all tar particles are aggregated on the axis of the pipe. This precise control of spatial position is perfectly matched with the spatial layout of the clean outlet at the center of the subsequent inverted conical tapered pipe, maximizing the radial separation path and maintaining extremely high gas-solid separation efficiency even under conditions of large fluctuations in room temperature during moxibustion.

[0031] 4. The technical approach of this solution is physical field control and inertial sorting; its core difference lies in the introduction of acoustic agglomeration effect to change the physical morphology of particles, artificially creating huge differences in mass and volume between pollutants and drug components, and then using the competition mechanism in fluid mechanics to achieve passive screening; this solution transforms micron-sized aerosols that are difficult to separate into large particle clusters that are easy to separate, realizing a leap from one-size-fits-all interception to refined component management, and achieving a breakthrough balance between preserving the traditional medical value of moxibustion and meeting modern environmental emission standards. Attached Figure Description

[0032] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0033] Figure 1 This is a schematic diagram of the overall structure of the device;

[0034] Figure 2 This is a schematic diagram of the connection structure between the flexible suction arm and the acoustic agglomeration channel assembly.

[0035] Figure 3 This is a schematic diagram of the connection structure between the variable cross-section cyclone separator conduit assembly and the coaxial double-layer sleeve outlet assembly;

[0036] Figure 4 This is a schematic diagram of the process flow of the method of the present invention.

[0037] In the diagram: 110, multi-source combustion source intake; 111, flexible intake arm; 210, metal circular tube; 220, piezoelectric ceramic transducer array; 240, sealing gasket; 310, volute-type tangential intake conversion section; 320, inverted conical tapered conical pipe; 410, central inner tube; 420, outer annular gap; 500, oil collection groove. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0039] Example 1:

[0040] Please see Figures 1-4 This invention provides a multi-site moxibustion-assisted nursing method, comprising:

[0041] S1. A multi-way combustion source intake 110, an acoustic agglomeration channel, and a variable cross-section swirl separation duct are provided. The main body of the acoustic agglomeration channel is a smooth inner metal circular tube 210. The outer wall of the metal circular tube 210 is provided with a piezoelectric ceramic transducer array 220 along the axial direction. The variable cross-section swirl separation duct is located downstream of the acoustic agglomeration channel. The inlet end of the variable cross-section swirl separation duct is a volute-type tangential intake conversion section 310. The main body of the variable cross-section swirl separation duct is an inverted conical tapered conical pipe 320.

[0042] S2. Obtain the current ambient temperature, correct the sound wave wavelength value according to the relationship between sound speed and temperature, and adjust the driving frequency of the piezoelectric ceramic transducer array 220 so that the inner diameter of the metal tube 210 is an integer multiple of half the sound wave wavelength, and the node plane of the standing wave is located at the geometric center of the cross section of the metal tube 210.

[0043] S3. Start the multi-way combustion source inlet 110 to draw the moxibustion smoke into the sound wave aggregation channel, control the airflow velocity in the sound wave aggregation channel to 2-4 m / s, and keep the airflow in a laminar state.

[0044] S4. Start the piezoelectric ceramic transducer array 220 to establish an ultrasonic standing wave field in the acoustic agglomeration channel. The driving frequency is 27-29kHz and the sound intensity level is greater than 140dB. The acoustic radiation force is used to drive the tar particles in the flue gas to the nodal plane to aggregate into large particle clusters with a diameter greater than 10μm.

[0045] S5. The agglomerated airflow is introduced into the inverted conical tapered pipe 320 through the volute-type tangential air intake conversion section 310. The centrifugal force generated by tangential acceleration is used to throw the large particle agglomerates against the pipe wall for collection. The drug volatile oil molecules are discharged from the center of the inverted conical tapered pipe 320.

[0046] This embodiment addresses the technical problems of heat without medicine and easy filter clogging in existing multi-point moxibustion nursing, and proposes a method based on acoustic-fluid coupling mechanism for smoke treatment.

[0047] In step S1, a physical field series environment is constructed; multiple combustion source inlets 110, for example, 4-8 ports are configured to collect dispersed moxibustion smoke; the acoustic agglomeration channel serves as the core processing unit, and its main body is a metal circular tube 210 with polished inner wall. This smooth inner wall not only serves as a smoke channel but also as an acoustic wave reflector to reduce acoustic energy loss; the piezoelectric ceramic transducer array 220 is distributed axially along the tube wall as an excitation source of acoustic energy; the variable cross-section swirl separation conduit is set downstream of the sound field, and the flow field morphology is transformed through changes in structural geometry;

[0048] In step S2, a dynamic calibration mechanism is implemented to address the impact of environmental changes on the stability of the sound field; the system is equipped with a temperature sensor to monitor the ambient temperature in real time. The control unit is based on the formula Calculate the current actual speed of sound, where, Speed ​​of sound, measured in m / s. The current ambient temperature is expressed in degrees Celsius, which is then used to correct the corresponding wavelength value. By adjusting the output frequency of the drive circuit, it is ensured that the inner diameter of the metal tube 210 always matches an integer multiple of half the wavelength of the sound wave, thus satisfying the approximate geometric equation of radial resonance. ,in, The inner diameter of the metal circular tube. The wavelength of the sound wave. It is a positive integer;

[0049] The technical purpose of this step is to establish a stable standing wave resonant cavity inside the pipe and to force the sound pressure node, that is, the position where the sound pressure is minimum and the particles converge, to be locked on the geometric center line of the pipe cross section; this lays the positional basis for the subsequent steps to concentrate the pollutants in the center and thus separate them from the central clean outlet in the swirl section.

[0050] In step S3, the flow field parameters are strictly limited. By adjusting the power of the induced draft fan, the carrier air velocity is locked in the range of 2-4 m / s. The lower limit of 2 m / s is set to ensure that the subsequent swirl section has sufficient tangential dynamic pressure to generate centrifugal force. The upper limit of 4 m / s is set to maintain the Reynolds number in the acoustic agglomeration channel within the laminar flow range. If the flow velocity is too high, turbulent vortices will be generated, which will destroy the stability of the standing wave nodes and cause the particles to fail to agglomerate effectively. Since the Reynolds number of the moxibustion smoke is large after multiple convergences, a honeycomb-shaped rectification grid is set at the inlet of the metal circular tube 210 to force the airflow entering the acoustic agglomeration channel to be converted into a metastable laminar flow or a stable flow field with low turbulence, so as to avoid violent pulsation that would destroy the spatial stability of the standing wave field.

[0051] In step S4, an acoustic agglomeration process is performed. The driving frequency is selected between 27-29 kHz, and the center frequency is set to 28 kHz. This frequency band balances the penetration power of sound waves to microparticles with agglomeration efficiency. The sound intensity level is set to be greater than 140 dB. This sound intensity level threshold is determined based on the lower limit of the energy for nonlinear acoustic agglomeration of tar particles in the airflow. If it is lower than this threshold, the acoustic radiation force is insufficient to overcome the Brownian motion interference of the airflow and cannot achieve forced migration of micron-sized particles to break through the energy threshold for triggering orthogonal shock waves and rapid agglomeration. In this high-intensity sound field, the suspended micron / submicron-sized, 0.1 μm-2.5 μm tar and ash particles are subjected to acoustic radiation force pointing to nodes and are forced to migrate towards the pipe axis. Due to the sharp increase in local particle concentration and the viscosity of the tar surface, inelastic collisions occur between particles, and they quickly adhere to each other, growing into large grape-like particle clusters with a diameter greater than 10 μm. Meanwhile, drug molecules, because their size is much smaller than the wavelength of sound waves, do not undergo acoustic scattering and remain uniformly distributed.

[0052] In step S5, gas-solid separation based on mass sorting is performed; after the airflow enters the inverted conical tapered pipe 320, the flow channel cross-section decreases, causing the airflow to accelerate tangentially; at this time, the artificially enlarged tar particle clusters, due to the dramatic increase in mass, are subjected to centrifugal force sufficient to overcome the fluid viscous drag force, and are thus thrown towards the pipe wall for capture; while the drug volatile oil molecules, due to their extremely small mass, are subjected to centrifugal force insufficient to overcome the fluid drag force, are locked in the central streamline by the fluid, and are discharged from the center, achieving the selective purification effect of removing oil and retaining drug.

[0053] Step S1 includes the following:

[0054] S1.1 By constructing a physical model, with the matching degree between the inner diameter of the metal tube 210 and the wavelength of the sound wave and the stability of the standing wave nodes as optimization objectives, the layout parameters of the piezoelectric ceramic transducer array 220 and the geometric dimensions of the metal tube 210 are simulated and calculated.

[0055] This embodiment illustrates the preprocessing and optimization process during the device design phase;

[0056] In step S1.1, a numerical model of acoustic-fluid coupling is constructed using multiphysics simulation software, such as COMSOL Multiphysics or ANSYS. The input parameters include the preset temperature range of moxibustion smoke, smoke density, and target processing flow rate. The optimization objectives are set in two dimensions: one is acoustic matching degree, that is, finding the optimal value of the inner diameter of the metal tube 210 so that it can form a standing wave field with a high quality factor and Q value within the working frequency range; the other is sound field uniformity, that is, optimizing the axial spacing and number of piezoelectric ceramic transducer arrays 220 to eliminate sound field blind spots. In the simulation model, the wall of the metal tube 210 is set as an acoustic hard boundary, and the fluid medium is set as a thermoviscous acoustic model. Through simulation calculation, the specific layout parameters of the transducer array, such as spacing and number, and the precise geometric dimensions of the metal tube 210, such as inner diameter, wall thickness, and length, are determined. This ensures that the system's response to sound waves at a specific frequency is in the optimal resonance state before hardware manufacturing, avoiding the problem of low acoustic-energy coupling efficiency caused by blind trial production.

[0057] This physical model is essentially a three-field coupling model of acoustic-solid-fluid. Its function is to establish a mathematical mapping relationship between pipe diameter, frequency and particle collection rate by simulating the radial distribution law of sound pressure level under different inner diameters, thereby characterizing the distribution characteristics of standing wave energy density in confined space.

[0058] In step S1, the piezoelectric ceramic transducer array 220 includes multiple sets of piezoelectric ceramic transducers, each set of piezoelectric ceramic transducers includes two oscillators that are symmetrically distributed at 180 degrees along the radial cross section of the metal tube 210, and the oscillators are configured to vibrate in phase.

[0059] This embodiment describes in detail the specific structure and working mode of the acoustic field excitation source, aiming to maximize the intensity and symmetry of the standing wave field;

[0060] In the hardware setup of step S1, the piezoelectric ceramic transducer array 220 is not randomly attached, but arranged in pairs; each pair of transducers contains two oscillators, which are distributed 180 degrees opposite each other on the cross-section of the metal tube 210; in terms of circuit drive, the pair of oscillators are configured to vibrate in phase, that is, simultaneously compressing into the tube or simultaneously expanding out of the tube, a breathing mode; this symmetrical excitation method can effectively excite a higher-order radial standing wave mode on the cross-section of the tube and ensure that the acoustic pressure nodes are accurately located on the geometric center line, preventing node offset caused by excitation asymmetry; the node being located at the center is crucial for subsequent processes, as it directly determines whether contaminants are accumulated on the central axis to be separated.

[0061] The steps in S5 include:

[0062] The volute-type tangential intake conversion section 310 is used to convert the straight airflow output from the acoustic wave agglomeration channel into a rotating airflow.

[0063] The airflow rotates and accelerates within the inverted conical tapered pipe 320, causing the centrifugal force on large particle clusters to exceed the viscous drag force exerted on them by the fluid, thus causing them to break away from the airflow streamline and impact the pipe wall.

[0064] The centrifugal force on the volatile oil molecules of the drug is less than the viscous drag force exerted on them by the fluid, so they are discharged from the center along with the main airflow.

[0065] This embodiment further illustrates the fluid dynamics mechanism of the separation stage, especially the passive screening logic based on Stokes number differences;

[0066] In step S5, the volute-type tangential intake conversion section 310 plays the role of flow field rectification. It forces the airflow that was originally moving in a straight line along the axis in the acoustic duct to enter the inverted conical duct in a tangential direction, thereby inducing a strong rotating flow field.

[0067] The subsequent separation process utilizes the competitive mechanism between centrifugal force and fluid drag in the physical field. For large particle clusters with a diameter greater than 10 micrometers formed after acoustic field treatment, they have a large Stokes number and inertia dominates. During high-speed rotation, the centrifugal force on the large particle clusters is significantly greater than the centripetal viscous drag force exerted on them by the fluid. This mechanical imbalance breaks the particle's following of streamlines, causing it to drift along the spiral trajectory towards the outer wall and eventually collide with the pipe wall and be captured.

[0068] Conversely, for effective drug components, gas molecules or tiny droplets have extremely low Stokes numbers and are dominated by viscosity; the centrifugal force they experience is much less than the viscous drag exerted by the fluid; therefore, the drug components are firmly held by the fluid and cannot migrate outwards, but can only follow the pressure gradient of the airflow and be discharged from the low-pressure zone at the center of the rotating flow field; this process does not require any sensors and relies entirely on the differences in the physical properties of the substances themselves to achieve high-precision component separation.

[0069] In step S1, the inlet tangential angle of the volute-type tangential intake conversion section 310 is 15-30 degrees;

[0070] This embodiment specifies the key geometric parameters for flow field transformation;

[0071] In the structural design of step S1, the inlet tangential angle of the volute-type tangential air intake conversion section 310 is strictly set between 15 and 30 degrees. This angle is the angle between the inlet airflow direction and the tangential direction of the swirling cavity. The technical consideration for selecting this angle range is to balance tangential velocity and flow resistance loss. If the angle is too large, the component of the airflow that hits the wall vertically increases, resulting in excessive kinetic energy loss, making it impossible to maintain sufficient separation speed in the subsequent pipe. If the angle is too small, although the tangential velocity component is large, it will result in a narrow inlet, which is very easy to cause airflow blockage. Setting it in the 15-30 degree range can maximize the conversion of the dynamic pressure output from the acoustic pipe into the tangential dynamic pressure in the swirling pipe, so that the Stokes number of the particles increases significantly when they enter the swirling field, thereby significantly enhancing the centrifugal separation factor and ensuring effective capture of large particles after agglomeration.

[0072] In step S5, the drug volatile oil molecules are discharged through the inner tube at the end of the inverted conical tapered pipe 320, and the large particle clusters fall into the oil collection tank 500 through the annular gap of the outer tube at the end of the inverted conical tapered pipe 320.

[0073] This embodiment describes in detail the final collection path after material separation;

[0074] At the end of step S5, physical diversion is achieved through a coaxial double-layer structure. The tail end of the inverted conical tapered pipe 320 is not a single outlet, but a nested structure. There is an inner pipe in the center, the opening of which faces the low-pressure area of ​​the airflow rotation center. It is specifically used to export clean airflow rich in drug volatile oil molecules. This airflow can be directly returned to the care area or discharged. An outer pipe annular gap is formed between the outer side of the inner pipe and the wall of the inverted conical pipe. This area corresponds to the high-pressure outer area of ​​the swirling flow field. Large particle clusters, tar, and ash thrown towards the pipe wall by centrifugal force spiral down the wall under the combined action of gravity and airflow, and finally fall into the oil collection tank 500 below through the outer pipe annular gap. This structural design cleverly utilizes the radial pressure distribution of the swirling flow field to achieve zero cross-flow and independent discharge of the gas and solid phases.

[0075] Example 2:

[0076] Please see Figures 1-3 A multi-site moxibustion auxiliary care device, comprising:

[0077] The multi-source combustion source intake 110 is used to collect the smoke generated by moxibustion;

[0078] The acoustic wave agglomeration channel is sealed and connected downstream of the multi-way combustion source intake 110. The acoustic wave agglomeration channel includes a metal circular tube 210 as an acoustic wave guide and a piezoelectric ceramic transducer array 220 disposed on the outer wall of the metal circular tube 210. The piezoelectric ceramic transducer array 220 is used to establish an ultrasonic standing wave field inside the tube.

[0079] A variable cross-section swirl separation duct is sealed and connected downstream of the acoustic agglomeration channel. The variable cross-section swirl separation duct includes a volute-type tangential air inlet conversion section 310 for generating rotating airflow and an inverted conical tapered conical pipe 320 for gas-solid separation.

[0080] This embodiment provides a specific apparatus structure for implementing the above method;

[0081] The device is mainly composed of three core functional modules connected in series; the front end is a multi-way combustion source inlet 110, which is designed to include multiple, such as 4 to 8 flexible suction arms 111, which can be adapted to moxibustion points of different acupoints on the back and efficiently collect smoke by using the thermophoretic effect.

[0082] The middle section is the acoustic wave agglomeration channel, which is connected to the front end via a flange. Its core component is a precision-machined metal tube 210, which serves as a waveguide cavity for acoustic wave propagation. On the outer wall of the metal tube 210, a piezoelectric ceramic transducer array 220 is fixed by structural adhesive or mechanical clamps. This array is connected to an external high-frequency signal generator, which can convert electrical signals into mechanical vibrations, thereby exciting the air medium inside the tube to generate an ultrasonic standing wave field, achieving morphological control and agglomeration of fine particles.

[0083] The rear section is a variable cross-section cyclone separator duct, which is sealed to the outlet of the acoustic channel via a flange. The duct is divided into two parts: the volute-type tangential inlet conversion section 310 at the inlet is responsible for converting direct current into cyclone. The inlet tangential angle of the conversion section is limited to 15-30 degrees to ensure that the airflow enters the cyclone cavity at the optimal angle of attack and maximizes the tangential velocity component; the main body's inverted conical tapered pipe 320 is responsible for accelerating the airflow rotation by utilizing the cross-sectional contraction effect, thereby generating a centrifugal force field sufficient to separate agglomerated particles. The overall device has a compact structure, and because there is no physical filter, it avoids frequent maintenance problems caused by tar blockage.

[0084] The tail end of the inverted conical tapered pipe 320 is connected to a coaxial double-layer sleeve outlet, which includes a central inner pipe 410 for discharging clean gas and an outer annular gap 420 for collecting sludge oil.

[0085] This embodiment provides a detailed description of the outlet structure of the device;

[0086] To adapt to the flow field distribution characteristics after cyclone separation, a coaxial double-layer sleeve outlet assembly is designed at the tail end of the device. The central inner tube 410 is usually made of corrosion-resistant stainless steel or polymer material. Its inlet extends into the inside of the inverted conical pipe, precisely aligned with the rotation axis of the airflow, and is used to draw out the light gas that retains the active pharmaceutical ingredients. The outer annular gap 420 is formed by the outer wall of the inner tube and the inner wall of the lower end of the inverted conical pipe. It is connected to the oil collection tank 500 at the bottom. It is a detachable design and is specifically used to collect heavy oil and ash clumps that slide down the wall. This double-layer sleeve design achieves complete physical isolation and prevents the separated contaminants from being re-entrained into the clean gas by the airflow.

[0087] The acoustic agglomeration channel and the variable cross-section cyclone separation conduit are connected by a flange seal, and the inner wall of the metal circular tube 210 has a smooth surface;

[0088] This embodiment focuses on describing the connection sealing performance and surface treatment process of the device;

[0089] Considering that the moxibustion smoke contains volatile gases and the system operates at a specific flow rate, the acoustic agglomeration channel and the variable cross-section swirl separation conduit are connected by a standard industrial flange, and supplemented with high-temperature resistant silicone or fluororubber sealing gaskets 240 to ensure the airtightness of the entire flow path system and prevent smoke leakage or external air intrusion that may interfere with the flow field.

[0090] In addition, the inner wall of the metal tube 210 has undergone rigorous polishing treatment, such as electrolytic polishing or mechanical fine polishing, to achieve an extremely low surface roughness Ra value. This feature has a dual technical effect: the smooth surface, as an excellent acoustic wave reflecting surface, can significantly reduce the absorption loss of acoustic waves on the wall surface and improve the energy density of the standing wave field; the smooth surface reduces the adhesion and residue of tar on the wall surface of the acoustic section, ensuring that more particles participate in agglomeration and are separated in the subsequent swirl section, rather than being deposited in the acoustic cavity.

[0091] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A multi-site moxa cautery assisted care method, characterized by, The method comprises the following steps: S1, setting up a multi-path combustion source suction port (110), a sound wave agglomeration flow channel and a variable cross-section cyclone separation guide pipe, wherein the main body of the sound wave agglomeration flow channel is a metal circular tube (210) with smooth inner wall, the outer wall of the metal circular tube (210) is provided with a piezoelectric ceramic transducer array (220) in the axial direction, the variable cross-section cyclone separation guide pipe is located downstream of the sound wave agglomeration flow channel, and the inlet end of the variable cross-section cyclone separation guide pipe is a volute type tangential inlet conversion section (310), and the main body of the variable cross-section cyclone separation guide pipe is a reverse tapered pipe (320); S2, obtaining the current ambient temperature, correcting the sound wave wavelength value according to the relationship between sound velocity and temperature, and adjusting the driving frequency of the piezoelectric ceramic transducer array (220) so that the inner diameter of the metal circular tube (210) is an integer multiple of the half wavelength of the sound wave, and the node plane of the standing wave is located at the cross-sectional geometric center of the metal circular tube (210); S3, starting the multi-path combustion source suction port (110), and collecting moxibustion flue gas into the sound wave agglomeration flow channel, controlling the flow velocity of the carrier gas in the sound wave agglomeration flow channel to be 2-4 m / s, and keeping the airflow in a laminar flow state; S4, starting the piezoelectric ceramic transducer array (220) to work, and establishing an ultrasonic standing wave field in the sound wave agglomeration flow channel, wherein the driving frequency is 27-29 kHz, and the sound intensity level is greater than 140 dB, and the tar particles in the flue gas are driven to the node plane by the acoustic radiation force to form large particle groups with a diameter greater than 10 μm; S5, the agglomerated airflow is introduced into the reverse tapered pipe (320) through the volute type tangential inlet conversion section (310), and the centrifugal force generated by the tangential acceleration is used to throw the large particle groups to the pipe wall for capture, and the drug volatile oil molecule gas is discharged from the center of the reverse tapered pipe (320).

2. The multi-site moxa cautery assisted nursing method according to claim 1, characterized in that, The steps before S1 include: S1.1, by constructing a physical model, taking the matching degree of the inner diameter of the metal circular tube (210) and the sound wave wavelength and the stability of the standing wave node as the optimization target, simulating and calculating the layout parameters of the piezoelectric ceramic transducer array (220) and the geometric size of the metal circular tube (210).

3. The multi-site moxa cautery assisted nursing method according to claim 1, characterized in that, In the step S1, the piezoelectric ceramic transducer array (220) comprises a plurality of piezoelectric ceramic transducers, each piezoelectric ceramic transducer comprises two vibrators which are symmetrically distributed along the radial cross section of the metal circular tube (210) at an angle of 180 degrees, and the vibrators are configured to vibrate in phase.

4. The multi-site moxa cautery assisted nursing method according to claim 1, characterized in that, The step S5 includes: The volute type tangential inlet conversion section (310) is used to convert the straight airflow output by the sound wave agglomeration flow channel into a rotating airflow; The airflow rotates and accelerates in the reverse tapered pipe (320), so that the centrifugal force acting on the large particle groups is greater than the viscous drag force exerted by the fluid, so that the large particle groups are separated from the airflow streamline and hit the pipe wall; The centrifugal force acting on the drug volatile oil molecule gas is less than the viscous drag force exerted by the fluid, so that the drug volatile oil molecule gas follows the main airflow and is discharged from the center.

5. The multi-site moxa cautery assisted nursing method according to claim 1, characterized in that, In the step S1, the inlet tangential angle of the volute type tangential inlet conversion section (310) is 15-30 degrees.

6. The multi-site moxa cautery assisted nursing method according to claim 1, characterized in that, In the step of S5, the medicine volatile oil molecule gas is discharged through the inner tube located at the tail end of the inverted tapered converging pipe (320), and the large particle groups fall into the oil collection tank (500) through the outer tube annulus located at the tail end of the inverted tapered converging pipe (320).

7. A multi-site moxibustion assisted care device applied to the multi-site moxibustion assisted care method of any one of claims 1 to 6, characterized in that, The application relates to a multi-path combustion source smoke collection device. The multi-path combustion source smoke collection device comprises a multi-path combustion source suction inlet (110) for collecting smoke generated by moxibustion, a sound wave agglomeration flow channel connected downstream of the multi-path combustion source suction inlet (110), a metal circular tube (210) serving as a sound wave waveguide and a piezoelectric ceramic transducer array (220) arranged on the outer wall of the metal circular tube (210), and the piezoelectric ceramic transducer array (220) is used for establishing an ultrasonic standing wave field in the tube. The multi-path combustion source smoke collection device further comprises a variable cross-section cyclone separation guide pipe connected downstream of the sound wave agglomeration flow channel, a volute type tangential inlet conversion section (310) for generating a rotating gas flow and an inverted tapered converging pipe (320) for carrying out gas-solid separation. The tail end of the inverted tapered converging pipe (320) is connected with a coaxial double-layer sleeve outlet, the double-layer sleeve outlet comprises a center inner tube (410) for discharging clean gas and an outer annulus (420) for capturing dirty oil.

8. The multi-site moxa cautery assisted nursing device according to claim 7, characterized in that, The sound wave agglomeration flow channel and the variable cross-section cyclone separation guide pipe are connected through flanges, and the inner wall of the metal circular tube (210) is a smooth surface.

9. The multi-site moxa cautery assisted nursing device according to claim 7, characterized in that, The application relates to a multi-path combustion source smoke collection device.

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